CN106373761A - Magnetic leakage control shielding structure of transformer - Google Patents
Magnetic leakage control shielding structure of transformer Download PDFInfo
- Publication number
- CN106373761A CN106373761A CN201610886899.0A CN201610886899A CN106373761A CN 106373761 A CN106373761 A CN 106373761A CN 201610886899 A CN201610886899 A CN 201610886899A CN 106373761 A CN106373761 A CN 106373761A
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- CN
- China
- Prior art keywords
- folder
- shielding construction
- magnetic shield
- transformer
- shield
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/36—Electric or magnetic shields or screens
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/12—Oil cooling
- H01F27/14—Expansion chambers; Oil conservators; Gas cushions; Arrangements for purifying, drying, or filling
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Regulation Of General Use Transformers (AREA)
Abstract
Disclosed is a magnetic leakage control shielding structure of a transformer. The magnetic leakage control shielding structure comprises a clamping piece magnetic shielding part arranged on a transformer clamping piece web plate, a strip-shaped magnetic shielding part arranged on the upper part of a main hollow channel between two transformer columns, an oil tank shielding structure and a tank cover copper shielding part arranged on the inner wall of a transformer oil tank and the inner side of a tank cover respectively, and L-shaped copper plates which are arranged on edges of upper and lower sections of the tank, and are connected with the oil tank shielding structure and the tank cover copper shielding part. By adoption of the magnetic leakage control shielding structure of the transformer provided by the invention, magnetic leakage can be controlled to the maximum, loss can be reduced, partial overheating can be avoided, and the safe operation of the transformer can be ensured.
Description
Technical field
The present invention relates to technical field of transformer manufacturing is and in particular to a kind of stray transformer flux controls shielding construction.
Background technology
With the fast development of power system, super extra-high voltage, high-power transformer are used widely.Transformer capacity increases
Greatly, leakage field increases substantially, and strong stray field causes inside transformer local temperature to raise, and loss increases；When temperature is more than desired value
When it may appear that hot-spot phenomenon, accelerate transformer oil ageing, more than 140 DEG C, transformer oil starts to decompose temperature；Sometimes also
The problems such as case can be caused along hot-spot, impact transformator normally runs.Therefore, how to efficiently control leakage field it is ensured that transformation
Device safe operation, becomes the problem that each transformer factory needs to solve.
Content of the invention
For the problems referred to above, the present invention provides a kind of stray transformer flux to control shielding construction.
For solving the above problems, the technical scheme that the present invention takes is: a kind of stray transformer flux controls shielding construction, including
The folder magnetic shield being arranged on apparatus for fixing transformer web, the bar shaped magnetic cup being arranged at main empty path top between two transformer pillars
Cover, be arranged at fuel tank shielding construction inside transformer oil chamber interior wall and case lid and case lid copper shield and be arranged at lower box
The l type copper coin being connected with fuel tank shielding construction and case lid copper shield at edge.
Folder magnetic shield is used for shielding folder, it is to avoid folder hot-spot；Bar shaped magnetic shield is used for controlling intercolumniation leakage field, keeps away
Exempt from the impact to tank wall and case edge for the intercolumniation leakage field, bar shaped magnetic shield section can be according to the close selection of device body brow leakage magnetic；Case lid copper
Shield maskable case lid, it is to avoid because leakage field reason leads to hot-spot；Be arranged at lower box along place and fuel tank shielding construction and
The l type copper coin that case lid copper shield connects, it is to avoid fuel tank and case are along hot-spot.
Described folder magnetic shield is right against main empty path, and covers the folder web region in addition to drawstring seat, and wherein one
Bar side laminating folder web, another side laminating core-lamination stack.
It is provided with insulating part it is ensured that both reliably insulate between described folder magnetic shield and folder web.
Described folder magnetic shield is fixed on folder web by securing member, and magnetic shield thickness can leak according to device body end
The close selection of magnetic magnetic.
Described folder magnetic shield end is provided with round copper rod, it is to avoid shielding end wedge angle generation office puts.
Described bar shaped magnetic shield is fixed by the briquetting of upper and lower make-up, and briquetting is provided with notch, bar shaped magnetic shield card
It is connected in notch.
Described fuel tank shielding construction is fixed by the bent plate being arranged on fuel tank tank wall, including being arranged on inner wall of oil tank
Copper shield and be arranged at the magnetic shield on copper shield surface, this magnetic shield is connected with folder web by independent lead-out wire.
Paper groove and cardboard parcel are passed through in described magnetic shield from inside to outside, and by no latitude glass tape colligation it is ensured that can
By insulation.
It is provided with elastic glue stick between described l type copper coin, ensure that two l type copper coin contacts are good using glue stick elasticity, keep away
Exempt from transformator save up and down connecting bolt and case along because leakage field concentration of local produce overheated.
Described folder magnetic shield and bar shaped magnetic shield are connected it is ensured that reliable respectively by independent lead-out wire with folder web
Ground connection.
The present invention proposes a kind of stray transformer flux and controls shielding construction, can control leakage field to greatest extent, reduces loss,
Avoid hot-spot it is ensured that transformer safety is run.
Brief description
Fig. 1 is stray transformer flux control structure schematic diagram；
Fig. 2 is folder magnetic shield scheme of installation；
Fig. 3 is the a-a sectional view of Fig. 2；
Fig. 4 is bar shaped magnetic shield scheme of installation；
Fig. 5 is the b-b sectional view of Fig. 4；
Fig. 6 is fuel tank shielding construction scheme of installation；
Fig. 7 is the c-c sectional view of Fig. 6；
Fig. 8 is case lid copper shield scheme of installation；
Fig. 9 is the d of Fig. 8 to expanded view；
Figure 10 is l type copper coin scheme of installation.
Wherein, 1, core-lamination stack, 2, folder web, 3, folder magnetic shield, 4, transformer pillar, 5, main empty path, 6, bar shaped magnetic
Shielding, 7, copper shield, 8, magnetic shield, 9, upper clamping piece, 10, drawstring seat, 11, circle copper rod, 12, securing member, 13, insulating part, 14,
Plate, 15, briquetting, 16, bent plate, 17, paper groove, 18, cardboard, 19, welding hole, 20, case edge, 21, l type copper coin, 22, case lid copper screen
Cover.
Specific embodiment
As described in Figure 1, a kind of stray transformer flux controls shielding construction, including the folder being arranged on apparatus for fixing transformer web 2
Part magnetic shield 3, it is arranged at the bar shaped magnetic shield 6 on main empty path 5 top between two transformer pillars 4, is arranged at transformer oil chamber interior wall
With the fuel tank shielding construction inside case lid and case lid copper shield 22 and be arranged at upper lower box along at 20 with fuel tank shielding construction
Independent lead-out wire and folder are passed through in the l type copper coin 21 connecting with case lid copper shield 22, folder magnetic shield 3 and bar shaped magnetic shield 6 respectively
Part web 2 connects.
As described in Fig. 2, Fig. 3, folder magnetic shield 3 is right against main empty path 5, and covers the folder web in addition to drawstring seat 10
Region, wherein one side laminating folder web 2, another side laminating core-lamination stack 1, folder magnetic shield 3 and folder web 2
Between be provided with insulating part, be fixed on folder web 2 by securing member 12, folder magnetic shield 3 end is provided with round copper rod 11.
As described in Fig. 4, Fig. 5, bar shaped magnetic shield 6 is fixing by the briquetting 15 of upper and lower make-up, and briquetting 15 is provided with notch,
Bar shaped magnetic shield 6 is connected in notch.
As described in Fig. 6, Fig. 7, fuel tank shielding construction is fixing by the bent plate 16 that is arranged on fuel tank tank wall, including being arranged at
Copper shield 7 on inner wall of oil tank and the magnetic shield 8 being arranged at copper shield 7 surface, independent lead-out wire and folder are passed through in this magnetic shield 8
Web 2 connects, and magnetic shield 8 passes through paper groove 17 from inside to outside and cardboard 18 wraps up, and passes through no latitude glass tape colligation.
As described in Fig. 8, Fig. 9, the welding hole 19 that case lid copper shield 22 is passed through thereon is arranged on case lid.
As described in Figure 10, it is provided with elastic glue stick between l type copper coin 21.
Claims (10)
1. a kind of stray transformer flux control shielding construction it is characterised in that: include the folder being arranged on apparatus for fixing transformer web (2)
Part magnetic shield (3), it is arranged at the bar shaped magnetic shield (6) on main empty path (5) top between two transformer pillars (4), is arranged at transformator
Fuel tank shielding construction inside inner wall of oil tank and case lid and case lid copper shield (22) and be arranged at lower box along (20) place with
L type copper coin (21) that fuel tank shielding construction and case lid copper shield (22) connect.
2. a kind of stray transformer flux according to claim 1 control shielding construction it is characterised in that: described folder magnetic cup
Cover (3) and be right against main empty path (5), and cover the folder web region in addition to drawstring seat (10), wherein one side laminating folder
Part web (2), another side laminating core-lamination stack (1).
3. a kind of stray transformer flux according to claim 1 and 2 control shielding construction it is characterised in that: described folder
It is provided with insulating part between magnetic shield (3) and folder web (2).
4. a kind of stray transformer flux according to claim 1 and 2 control shielding construction it is characterised in that: described folder
Magnetic shield (3) is fixed on folder web (2) by securing member (12).
5. a kind of stray transformer flux according to claim 1 and 2 control shielding construction it is characterised in that: described folder
Magnetic shield (3) end is provided with round copper rod (11).
6. a kind of stray transformer flux according to claim 1 control shielding construction it is characterised in that: described bar shaped magnetic cup
Cover (6) to fix by the briquetting (15) of upper and lower make-up, and briquetting (15) is provided with notch, bar shaped magnetic shield (6) is connected in notch
Interior.
7. a kind of stray transformer flux according to claim 1 control shielding construction it is characterised in that: described fuel tank shielding
Structure includes the copper shield (7) being arranged on inner wall of oil tank and the magnetic shield (8) being arranged at copper shield (7) surface.
8. a kind of stray transformer flux according to claim 7 control shielding construction it is characterised in that: described magnetic shield
(8) pass through paper groove (17) and cardboard (18) parcel from inside to outside, and pass through no latitude glass tape colligation.
9. a kind of stray transformer flux according to claim 1 control shielding construction it is characterised in that: described l type copper coin
(21) it is provided with elastic glue stick between.
10. a kind of stray transformer flux according to claim 1 control shielding construction it is characterised in that: described folder magnetic
Shielding (3) and bar shaped magnetic shield (6) are connected with folder web (2) by independent lead-out wire respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610886899.0A CN106373761B (en) | 2016-10-11 | 2016-10-11 | A kind of stray transformer flux control shielding construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610886899.0A CN106373761B (en) | 2016-10-11 | 2016-10-11 | A kind of stray transformer flux control shielding construction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106373761A true CN106373761A (en) | 2017-02-01 |
| CN106373761B CN106373761B (en) | 2018-10-16 |
Family
ID=57896180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610886899.0A Active CN106373761B (en) | 2016-10-11 | 2016-10-11 | A kind of stray transformer flux control shielding construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106373761B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106783097A (en) * | 2017-02-22 | 2017-05-31 | 山东输变电设备有限公司 | Reactor body magnetic leakage shielding structure |
| CN108572334A (en) * | 2018-06-01 | 2018-09-25 | 南方电网科学研究院有限责任公司 | A kind of transformer exception leakage field monitoring system |
| CN109524221A (en) * | 2018-12-21 | 2019-03-26 | 济南西门子变压器有限公司 | Transformer |
| CN110070977A (en) * | 2019-06-04 | 2019-07-30 | 保定天威保变电气股份有限公司 | Large capacity converter power transformer iron core high-temperature insulation structure and method |
| CN112735783A (en) * | 2020-12-21 | 2021-04-30 | 山东电力设备有限公司 | Transformer copper shielding structure |
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| CN201562564U (en) * | 2009-10-29 | 2010-08-25 | 保定天威集团有限公司 | Connection structure for upper and lower electric shields of large transformer |
| CN202025626U (en) * | 2010-12-30 | 2011-11-02 | 保定天威集团有限公司 | Shielding structure of high-capacity high-voltage power transformer |
| EP2400512A1 (en) * | 2010-06-28 | 2011-12-28 | ABB Technology AG | Transformer with shielded yoke |
| CN103824682A (en) * | 2014-03-04 | 2014-05-28 | 国家电网公司 | Extra-high voltage transformer and iron core assembly thereof |
| CN206040407U (en) * | 2016-10-11 | 2017-03-22 | 山东电力设备有限公司 | Transformer magnetic leakage control shielding structure |
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2016
- 2016-10-11 CN CN201610886899.0A patent/CN106373761B/en active Active
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| CN201562564U (en) * | 2009-10-29 | 2010-08-25 | 保定天威集团有限公司 | Connection structure for upper and lower electric shields of large transformer |
| EP2400512A1 (en) * | 2010-06-28 | 2011-12-28 | ABB Technology AG | Transformer with shielded yoke |
| CN202025626U (en) * | 2010-12-30 | 2011-11-02 | 保定天威集团有限公司 | Shielding structure of high-capacity high-voltage power transformer |
| CN103824682A (en) * | 2014-03-04 | 2014-05-28 | 国家电网公司 | Extra-high voltage transformer and iron core assembly thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106783097A (en) * | 2017-02-22 | 2017-05-31 | 山东输变电设备有限公司 | Reactor body magnetic leakage shielding structure |
| CN108572334A (en) * | 2018-06-01 | 2018-09-25 | 南方电网科学研究院有限责任公司 | A kind of transformer exception leakage field monitoring system |
| CN108572334B (en) * | 2018-06-01 | 2020-05-26 | 南方电网科学研究院有限责任公司 | Abnormal magnetic flux leakage monitoring system for transformer |
| CN109524221A (en) * | 2018-12-21 | 2019-03-26 | 济南西门子变压器有限公司 | Transformer |
| CN110070977A (en) * | 2019-06-04 | 2019-07-30 | 保定天威保变电气股份有限公司 | Large capacity converter power transformer iron core high-temperature insulation structure and method |
| CN112735783A (en) * | 2020-12-21 | 2021-04-30 | 山东电力设备有限公司 | Transformer copper shielding structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106373761B (en) | 2018-10-16 |
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